<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	<style type="text/css">
		*{
			padding: 0;
			margin: 0;
		}
		#hd{
			width: 70%;
			height: 200px;
			background: dodgerblue;
			margin: 100px auto;
			min-width: 300px;
			max-width: 600px;
		}
	</style>
	</head>
	<body>
		
		<div id="hd"></div>
		
		
	</body>
</html>
